PubMed
The free, authoritative front end to the world's biomedical literature.
Tier 2 Open AccessFree
Research Database Directory
Every research database, reviewed.
Bloomberg Terminal
The financial industry's command line — real-time markets, news, and analytics, at a price to match.
Tier 2 CorporateSubscription
ProQuest
The aggregator behind the library catalogue — dissertations, news, and scholarly content under one subscription.
Tier 2 CorporateSubscription
SSRN
The early-stage repository where economics, finance, and law circulate first.
Tier 2 CorporateFree
Zotero
The free, open-source reference manager most researchers already have — and underuse.
Tier 2 ToolsFree
arXiv
The original preprint server — open science before the term existed.
Tier 2 Open AccessFree
bioRxiv / medRxiv
The preprint servers that moved the life and health sciences to publish-first.
Tier 2 Open AccessFree
Scite
Citation context, not just citation counts — does the literature support this claim or contradict it?
Tier 2 ToolsSubscription
DOAJ
The vetted directory of trustworthy open-access journals — the antidote to predatory publishing.
Tier 2 Open AccessFree
Semantic Scholar
The AI-native index that reads papers so you don't have to read all of them.
Tier 2 Open AccessFree